A316880 - OEIS

%I #4 Jul 15 2018 14:11:37

%S 16,94,388,2401,18847,125218,843479,6198339,45184963,326389098,

%T 2402046659,17720890254,130440276569,964053093375,7131453549425,

%U 52734450773582,390342305773895,2889943173985064,21394977504230336

%N Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 5 of A316883.

%H R. H. Hardin, <a href="/A316880/b316880.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..1..1..1..1. .0..0..0..1..0. .0..0..1..1..0. .0..0..1..0..1

%e ..1..0..1..1..0. .0..0..1..0..0. .1..1..1..1..0. .1..1..1..1..0

%e ..1..1..1..0..1. .0..1..0..0..0. .1..1..1..1..1. .1..1..1..1..1

%e ..0..1..1..1..1. .1..0..1..1..1. .0..1..1..0..1. .0..0..1..1..1

%e ..1..0..1..1..1. .1..1..0..1..1. .0..1..1..1..0. .1..1..1..0..1

%Y Cf. A316883.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 15 2018